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| Number | Title | Issue Date |
| 8091641 | Method and apparatus to cement a perforated casing A method of and an apparatus for treating a near zone and/or a far zone of a well is disclosed. The method comprises the following steps. (1) A tube that is permeable to a material is placed inside a wellbore, forming an annulus inside the wellbore. (2) A setting se... | 01/10/2012 |
| 7458422 | One trip cemented expandable monobore liner system and method A liner is inserted in the casing and is preferably expanded into sealing contact with the mounting location on the casing. After expansion a cement retainer positioned at the bottom of the expanded liner and the sliding sleeve located either above the mounting loca... | 12/02/2008 |
| 7398825 | Methods of controlling sand and water production in subterranean zones Methods for stabilizing portions of a subterranean formation and controlling the production of water from those subterranean formations. In one embodiment, the methods of the present invention comprise: providing a consolidating agent; introducing the consolidating ... | 07/15/2008 |
| 7380605 | Energy transfer loop apparatus and method of installation A method of forming an energy transfer loop in the earth has the steps of connecting a tubing to a nose member, extending a liquid delivery pipe to the nose member, pumping a liquid through the liquid delivery pipe to the nose member, jetting the liquid from the nos... | 06/03/2008 |
| 7350578 | Diverter plugs for use in well bores and associated methods of use Zonal isolation of well bores is often desirable for performing downhole operations such as stimulation operations. In certain embodiments, diverter plugs for achieving zonal isolation in a casing string in a well bore may comprise a mandrel having a first end and a... | 04/01/2008 |
| 7331243 | Force transducer for measuring axial forces A force transducer for measuring axial forces which act essentially transversely on an axis, in particular a measuring axis, has a longitudinally extending axial body, which has a first portion, forming a force introduction zone, at least one second portion, forming... | 02/19/2008 |
| 7303008 | Methods and systems for reverse-circulation cementing in subterranean formations Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing in a subterranean well bore, comprising inserting a casing into the well bore, the casing comprising a casing shoe; ... | 12/04/2007 |
| 7296625 | Methods of forming packs in a plurality of perforations in a casing of a wellbore The invention provides a method of forming packs in a plurality of perforations in a casing of a wellbore, the method comprising the steps of: (a) forming a plug of a plugging particulate material in the wellbore of the casing, wherein the plug covers at least one p... | 11/20/2007 |
| 7270181 | Downhole surge pressure reduction and filtering apparatus The present invention provides a downhole cementing apparatus run into a borehole on a tubular. The apparatus is constructed on the pipe in such a way that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilize the fluid pathway of t... | 09/18/2007 |
| 7270182 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 09/18/2007 |
| 7261153 | Packer cups A packer cup for use in sealing the interior of a pipe under pressure is described. The cup uses a bell-shaped end which has a lip of softer material which is integral with the body of the cup which is harder material. Under pressure the lip expands against the side... | 08/28/2007 |
| 7243723 | System and method for fracturing and gravel packing a borehole A system and method for fracturing an earth formation surrounding a borehole includes an elongate conduit positioned in the borehole. A packer assembly is provided about the conduit and is adapted to seal an annulus between the conduit and the borehole. A packing pa... | 07/17/2007 |
| 7240728 | Expandable tubulars with a radial passage and wall portions with different wall thicknesses A tubular liner including a first tubular portion, a second tubular portion, and an intermediate tapered tubular portion coupled to, and positioned between, the first and second tubular portions. ... | 07/10/2007 |
| 7219750 | Process and system for drilling and lining a bore hole An apparatus is provided for the drilling of a borehole and its simultaneous lining with cement or the like by the same apparatus. The apparatus comprises a combination spray head and reamer head, a means to drive the reamer head through a borehole and a means for d... | 05/22/2007 |
| 7213649 | Geothermal pipe weight A method and apparatus for adding rigidity and weight to the piping used in geothermal wells for ground-source heat pumps enhances insertion of the piping into the wells. The weight used must be approved by appropriate organizations such as the DNR, NSF, and/or EPA,... | 05/08/2007 |
| 7182142 | Downhole apparatus Apparatus (10) for facilitating coupling and cementing of downhole tubulars (12, 28) comprises a tubing section (12, 10) for use in lining a bore. The tubing section has upper and lower ends and defines a tubing wall having cement outlets (20... | 02/27/2007 |
| 7182135 | Plug systems and methods for using plugs in subterranean formations A method and plug for separating fluids in subterranean wells is provided. The plug enters a passage at an interface of successively introduced fluids. The plug comprises an outer body and a detachable inner mandrel attached to the outer body. An Assembly comprising... | 02/27/2007 |
| 7172021 | Liner hanger with sliding sleeve valve An apparatus and method for forming or repairing a wellbore casing, a pipeline, or a structural support. An expandable tubular member is radially expanded and plastically deformed by an expansion cone that is displaced by hydraulic pressure. Before or after the radi... | 02/06/2007 |
| 7156172 | Method for accelerating oil well construction and production processes and heating device therefor Methods are described for providing localized heating in an oil well at precise depths to accomplish or expedite specific objectives. The methods involve the use of a heating tool which can be lowered into an oil well to apply heat at a precise depth to achieve a de... | 01/02/2007 |
| 7146823 | Horizontal and vertical direct exchange heating/cooling system sub-surface tubing installation means A sub-surface geothermal direct exchange sub-surface tubing installation means, comprising situating certain specified tubing sizes for certain specified horizontal distances and for certain specified depths within each of a horizontally oriented trench and a vertic... | 12/12/2006 |
| 7093657 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 08/22/2006 |
| 7090153 | Flow conditioning system and method for fluid jetting tools According to one embodiment of the invention, a flow conditioning system for fluid jetting tools includes a housing having a plurality of jet nozzle openings and a fluid straightener disposed within the housing. The fluid straightener is defined by one or more vanes... | 08/15/2006 |
| 7066249 | Cementing manifold assembly Apparatus for cementing a string of tubulars in a borehole comprises an enclosure having a bore therethrough, an axially fixed sphere canister having a sphere aperture therethrough, a sphere valve member having a valve body disposed internally of said bore, and a sp... | 06/27/2006 |
| 7066265 | System and method of production enhancement and completion of a well A method of treating and completing a well includes positioning a downhole tool within a well. The downhole tool includes an elongated body defining a central passageway and including a plurality of production openings and at least one frac opening, a frac mandrel d... | 06/27/2006 |
| 7063142 | Method of applying an axial force to an expansion cone A method of applying an axial force to a first piston positioned within a first piston chamber including applying an axial force to the first piston using a second piston positioned within the first piston chamber. ... | 06/20/2006 |
| 7048037 | Geothermal heating and/or cooling apparatus and method of using same A geothermal apparatus comprising a first pipe for receiving a heat exchange liquid therein and a second pipe for receiving the heat exchange liquid therein and having a web integrally connected to each of the first and second pipes, between such pipes for holding t... | 05/23/2006 |
| 7044221 | Apparatus for coupling a tubular member to a preexisting structure An apparatus for coupling a tubular member to a preexisting structure. ... | 05/16/2006 |
| 7040396 | Apparatus for releasably coupling two elements An apparatus for coupling two elements including an outer tubular member defining one or more outer tubular member slots, an inner tubular member defining one or more inner tubular member slots positioned within the outer tubular member, and a coupling assembly for ... | 05/09/2006 |
| 7017650 | Earth loop energy systems Wellbore heat loop systems, fillers for bores in the systems, and methods of the use of such systems; the systems in certain aspects having a heat loop wellbore in the earth having heat loop pipe extending down to one side of a bottom member and up therefrom on anot... | 03/28/2006 |
| 6973966 | Compressible darts and methods for using these darts in subterranean wells The present invention relates generally to subterranean well construction, and more particularly, to improved darts and methods of using these darts in subterranean wells. In one embodiment, the present invention provides a dart for activating a plug located within ... | 12/13/2005 |
| 6968903 | Orientable whipstock tool and method A whipstock assembly includes a whipstock body 8 having a whipstock center of gravity offset radially from the central axis of the whipstock body, a counterweight to releasably secured to the whipstock body, with a counterweight having an offset counterweight... | 11/29/2005 |
| 6966370 | Apparatus for actuating an annular piston An apparatus comprising a first tubular member; a second tubular member positioned within and coupled to the first tubular member; a first annular piston chamber defined by the space between the first and second tubular members; an annular piston movably coupled to ... | 11/22/2005 |
| 6955219 | Earth loop installation with sonic drilling A method for installing a heat exchange pipe loop in a borehole, the method in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill shoe on a lower end of the casing movable by the soni... | 10/18/2005 |
| 6942038 | Mud diverter and method for horizontal drilling A drilling mud diverter and method of use for horizontal drilling operations wherein drilling muds are diverted to a single portal of the bore where the drilling muds are recovered for removal or reprocessing, the mud diverter having a diverter unit with a central c... | 09/13/2005 |
| 6935423 | Borehole retention device A borehole retention assembly for anchoring a well tool within a wellbore including a gripping assembly and an actuation assembly. The gripping assembly includes expandable members such that upon expanding the expandable members, the gripping assembly engages the wa... | 08/30/2005 |
| 6923263 | Well sealing method and apparatus An apparatus for forming a plug in a casing includes a body of plug material and a carrier for insertion into a casing. The carrier supports the body of plug material. The carrier includes a mandrel and at least two circular flanges spaced apart along the mandrel. T... | 08/02/2005 |
| 6920929 | Reverse circulation cementing system and method A system and method of cementing in an annulus formed between a casing and the wall of a well bore, wherein a foamed cement is introduced into the upper portion of the annulus, directed downwardly through the annulus and back up into the casing, and then displaced b... | 07/26/2005 |
| 6910537 | Canister, sealing method and composition for sealing a borehole Method and composition for sealing a borehole. A chemically bonded phosphate ceramic sealant for sealing, stabilizing, or plugging boreholes is prepared by combining an oxide or hydroxide and a phosphate with water to form slurry. The slurry is introduced into the b... | 06/28/2005 |
| 6904970 | Cementing manifold assembly A cementing manifold is disclosed that preferably includes: modular housings that can be stacked together and interconnected to add multi-dart or multi-sphere capability; identical, interchangeable valves; internal bypass capability; a minimum number of protrusions ... | 06/14/2005 |
| 6880636 | Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring An embodiment of a downhole tool for use with a workstring in a wellbore includes a first section, a second section, and a coupling mechanism adapted such that in a first configuration the coupling mechanism couples the first section to the second section. In a seco... | 04/19/2005 |
